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Show your concern for the environment by making your next cup of tea or coffee in the Global Warming Mug! As the mug warms up, low lying parts of the continent change from green to blue. All done with thermochromic ink apparently!This is a regular size china mug. It is microwave safe, but should not be put in the dishwasher. Comes in a presentation cardboard box.Watch the video...Ask a question about: Global Warming MugPeople who bought this item also bought:
